In a world where everyone is born female and sex is determined by a childhood lottery, two best friends are seperated to develop differently. Now that they've graduated, they decide to reunite for a camping trip together. They had both dreamed of becoming men, but only one of them saw the dream come true.

In this world everyone is born a girl. Sex is determined by a lottery at the end of grade school. I had a winning ticket, but on the same day as the drawing I started my period, invalidating me for the injection. After graduation I went on a camping trip with my best friend Alex, who took my place in the lottery and recently completed male development. It's our first time together since the day of the drawing. Watching Alex chop the wood for our fire, I was struck by the gulf that had grown between our bodies. As girls we had looked like sisters, we could share clothes even though I was a couple inches taller. Now he towered over me, his muscles rippling with each swing of the axe. My body had grown larger too, but not like his. I'd gained a few inches of height, but most of my development had gone to my hips, my breasts, and my reproductive system. I'd suffered through over a hundred periods since that first awful experience, but I still hated it every single time. All I could think about now was how it should have been me getting the injection, going to boy school, chopping the wood, never worrying about a monthly cycle. Alex paused and looked in my direction. I wondered if he knew what was going through my mind. "Do you want a turn?" He asked, offering me the axe and wiping his brow. "Uh, sure." I said, cautiously stepping up to the stump we'd been using as a chopping block. Alex balanced a round of wood on the stump and backed away. I struggled to lift the axe over my head. "Whoa, careful." Alex chided me, stepping up and guiding my hands. "Here, hold it near the …